Highlights • Primary malignant melanoma of the esophagus (PMME) is a rare disease with a poor prognosis.• There are few reports of treatment with the anti-programmed cell death 1 antibody,… Click to show full abstract
Highlights • Primary malignant melanoma of the esophagus (PMME) is a rare disease with a poor prognosis.• There are few reports of treatment with the anti-programmed cell death 1 antibody, nivolumab for PMME.• We report a case of retroperitoneal recurrence of PMME successfully treated with nivolumab.
               
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